package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.ibatis.annotations.Select;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static final  String WX_LOGIN= "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatProperties weChatProperties;
    public User wxLogin(UserLoginDTO userLoginDTO){
        String openid = getOpenid(userLoginDTO.getCode());
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);

        }


        //检测是否获得正确的openid
        //是否为新用户
        User user = userMapper.getByUserId(openid);
        //新用户存储
        if(user==null){
           user = User.builder().openid(openid).createTime(LocalDateTime.now()).build();
           userMapper.insert(user);
        }
        //

        return user;
    }

    private String getOpenid(String code){
        //调用微信接口获得openid
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid =jsonObject.getString("openid");
        return openid;
    }
}
